Sony TFM-7720W portable radio: transistor count?
 

I have a Sony TFM-7720W transistor AM-FM portable radio, 1973 vintage I think. (I mentioned this one in a previous post, in which I wondered why Sony designed it to work with only two D-cell batteries for just 3 volts, as opposed to most '70s portables that use at least four and as many as six or more such batteries.) Was wondering how many transistors this radio has, as there is no mention of such on the front panel or even on the back cover, and whether it has such refinements as push-pull audio, at least two IF stages, AM RF amp, et al. The dial scale stretches the width of the radio and is quite spead out, so I would think the signal circuits are very sensitive and selective; great for RF-deprived fringe areas.

TIA